1. The earthworms, cockroaches, and golden needles harm wheat more severely and can also harm a variety of crops. In particular, they like to eat freshly sprouted seeds, bite off the roots and stems of seedlings, and lightly make sure that the seedlings are cut off and ridged, and when they are heavy, the seeds are destroyed. (1) Cockroaches crawl mainly on the surface of the soil, snaking in and out of the ground, tunnels traverse, causing seed overhead, seedlings hanging roots, resulting in seeds can not germinate, seedlings lose water and die. (2) Earthworms mainly damage the roots and stems of seedlings, and the fractures are tidy and truncated and easy to identify. (3) The main pathogens of Golden worms are sowing seeds and germinating young shoots, causing the crops to wither and die, causing ridges and ridges, and even destroying all fields.
2. Control methods: A representative plot survey was selected 30 days after the emergence of wheat. When the dead seedling rate reached 3%, the pesticide application was immediately prevented. Wear the enemy's venomous poison cake: Use 90% crystal trichlorfon 75 grams per acre, first turn it off with warm water, and then add water to a mixture of 1.5 kilograms of the liquid spray mixture in 10 kilograms of sesame cake that has been crushed and sauteed or Coriander cake, stuffy for 4 to 6 hours, served as a poison cake. Use maggots to put poison baits on wheat fields. This method extermination effect of up to 95%. Sprinkle poisonous soil: 2% methyl isofluosal powder per acre, 2 kg of mixed fine soil 30-40 kg, and mix well and then apply to a wheat ridge in a ditch, which can effectively prevent the harm of earthworm, golden needleworm and wheat midge. Sprinkling irrigation solution: For the land plots that are damaged by spotting, 40% methyl isofluosal or 50% phoxim 0.5 kg plus 60-75 kg of water can be used per acre, and wheat roots can be sprayed at Shunmai ridge.
2. Control methods: A representative plot survey was selected 30 days after the emergence of wheat. When the dead seedling rate reached 3%, the pesticide application was immediately prevented. Wear the enemy's venomous poison cake: Use 90% crystal trichlorfon 75 grams per acre, first turn it off with warm water, and then add water to a mixture of 1.5 kilograms of the liquid spray mixture in 10 kilograms of sesame cake that has been crushed and sauteed or Coriander cake, stuffy for 4 to 6 hours, served as a poison cake. Use maggots to put poison baits on wheat fields. This method extermination effect of up to 95%. Sprinkle poisonous soil: 2% methyl isofluosal powder per acre, 2 kg of mixed fine soil 30-40 kg, and mix well and then apply to a wheat ridge in a ditch, which can effectively prevent the harm of earthworm, golden needleworm and wheat midge. Sprinkling irrigation solution: For the land plots that are damaged by spotting, 40% methyl isofluosal or 50% phoxim 0.5 kg plus 60-75 kg of water can be used per acre, and wheat roots can be sprayed at Shunmai ridge.
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